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Criteria Quality of work Quantity of work Unacceptable 1 Work was not usable, or regularly needed major rework Marginal 2 Work often had flaws and omissions that needed fixing Did hardly any work. Contributed OK, somewhat less than their share. Usually met commitments. Needed some reminders or follow-up. Some interaction problems, unhelpfulness, or failure to communicate. Dependability Could not be counted and meeting on at all. commitments Very good 3 Generally high quality of work, only occasional fixes needed Worked hard, carried their share of the load. Outstanding 4 Amazingly good output, well beyond expectations Drew out others and ensured that everyone participated, used and encouraged the team to use the class meeting time efficiently Did everything well and added some outstanding contributions Considerable extra work, more than their share. Conscientious about Went out of the way to commitments. Very pick up slack for dependable. others who miss commitments. Interacted well with Went out of the way to others, helpful, flexible, help teammates and pleasure to work with. enable them to contribute. Interaction, supporting other team members, sharing information Team meetings: participation, use of team time Was a major problem to interact and work with. Little participation in discussions and activities, wasted the class team time. Participation spotty: not always participative, did not always use class team time effectively Participated fully in all team activities, used the class team time wisely Overall Contributions Rating Often failed to complete assigned work, was difficult to work with and made no real contributions to the team. Sometimes failed to complete assigned work, was often unprepared, but made some contributions Consistently good contributions, valuable member of the team, and usually prepared 1. What is the definition of atomic number? Number of protons in the nucleus 2. What is the definition of atomic mass? Neutrons + Protons; mass of an atom D, E, Q 1 3 compare and contrast Mendeleev and Moseley’s periodic tables. explain the benefits and drawbacks of the Bohr model of the atom, and describe the currently accepted theory of the locations of electrons around an atom. By 1860, more than 60 elements had been discovered (How should we organize all of these elements!?) Mendeleev is credited with developing the periodic table (father of the PT!) Created 1869 his table in Mendeleev arranged the elements in order of increasing atomic mass and noticed that certain similarities in element’s properties appeared at regular intervals Arranged in order of increasing atomic mass Rows and columns switched In 1911, Henry Moseley created a periodic table that was arranged by increasing atomic number. How is the PT organized today? What is the main difference between Mendeleev and Moseley’s periodic table? What are some similarities between the two tables? Natural States of the Elements (solid/liquid/gas) explain the benefits and drawbacks of the Bohr model of the atom, and describe the currently accepted theory of the locations of electrons around an atom. describe the organization of the electron cloud into energy levels and sublevels list the amount of electrons that can fill each energy level What Bohr Did Right… Electrons of increasing energy occupy orbits farther and farther from the nucleus Electrons exist in quantized orbits (specific energy levels). Electrons can’t exist between energy levels Electrons can’t exist between energy levels, just like people can’t stand between stair steps With the partner who is sitting next to you, create an analogy about quantized energy • Both partners need to contribute to the final product • Conversation should be on task • 2 minute time limit!! Draw your analogy/something brilliant below: Draw your analogy/something brilliant below: Electrons do not travel in neat, planet-like orbits This will blow your mind! + Energy level= stair Stairs contain shapes Shapes contain orbitals 4. 3. 2. 1. Orbital: a three-dimensional region around the nucleus Each orbital contains 2 electrons; where the electrons spend 90% of their time Orbital (Subshell) Shape Number of Orbitals Total number of electrons S Sphere 1 2 P D F Orbital (Subshell) Shape Number of Orbitals Total number of electrons S Sphere Peanut 1 3 2 6 P D F Orbital (Subshell) Shape Number of Orbitals Total number of electrons S Sphere Peanut Clover 1 3 5 2 6 10 P D F Orbital Shape Shape Number of Orbitals Total number of electrons S Sphere 1 2 P Peanut 3 6 D Clover 5 10 F Flower? 7 14 Whiteboard directions/expectations How many electrons can an orbital hold? How many electrons can an orbital hold? 2 True or false? Each energy level contains shapes. True or false? Each energy level contains shapes. Answer: TRUE How many electrons can the S orbital shape hold? How many electrons can the S orbital shape hold? Answer: 2 What is the shape of d orbitals? What is the shape of d orbitals? Answer: Clover Name that orbital: This orbital shape can hold 6 electrons and is shaped like a peanut/dumbbell. Name that orbital: This orbital can hold 6 electrons and is shaped like a peanut/dumbbell. Answer: p orbital Put your notes away! How many orbitals does the f orbital shape contain? How many orbitals does the f orbital shape contain? Answer: 7 How many electrons does the f orbital shape contain? How many electrons does the f orbital shape contain? Answer: 14 What is the number of orbitals in the p-shape? What is the number of electrons total in the pshape? What is the number of orbitals in the p-shape? What is the number of electrons total in the p-shape? Answer: 3 orbitals; 6 electrons Why was Bohr’s model wrong? Why was Bohr’s model wrong? Electrons do not orbit the nucleus on singular paths (like planets around the sun) Where do electrons have more energy? Closer or farther from the nucleus? Where do electrons have more energy? Closer or farther from the nucleus? Which electron has more energy? #1 #2